Investigation of Advanced Counterrotation Blade Configuration Concepts for High Speed Turboprop Systems PDF Download
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Author: Edward J. Hall
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 354
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Book Description
Author: Edward J. Hall
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 354
Get Book Here
Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723186257
Category :
Languages : en
Pages : 112
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Book Description
A procedure is studied for generating three-dimensional grids for advanced turbofan engine fan section geometries. The procedure constructs a discrete mesh about engine sections containing the fan stage, an arbitrary number of axisymmetric radial flow splitters, a booster stage, and a bifurcated core/bypass flow duct with guide vanes. The mesh is an h-type grid system, the points being distributed with a transfinite interpolation scheme with axial and radial spacing being user specified. Elliptic smoothing of the grid in the meridional plane is a post-process option. The grid generation scheme is consistent with aerodynamic analyses utilizing the average-passage equation system developed by Dr. John Adamczyk of NASA Lewis. This flow solution scheme requires a series of blade specific grids each having a common axisymmetric mesh, but varying in the circumferential direction according to the geometry of the specific blade row. Crook, Andrew J. and Delaney, Robert A. Unspecified Center COMPUTATIONAL GRIDS; COMPUTERIZED SIMULATION; COUNTER ROTATION; GRID GENERATION (MATHEMATICS); PROPULSION SYSTEM CONFIGURATIONS; TURBOFAN ENGINES; USER MANUALS (COMPUTER PROGRAMS); ALGORITHMS; APPLICATIONS PROGRAMS (COMPUTERS); COMPUTATIONAL FLUID DYNAMICS; COMPUTER AIDED DESIGN; FLOW DISTRIBUTION; PROPELLER BLADES; TURBOPROP ENGINES...
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 368
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781724265586
Category :
Languages : en
Pages : 366
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Book Description
The focus of this task was to validate the ADPAC code for heat transfer calculations. To accomplish this goal, the ADPAC code was modified to allow for a Cartesian coordinate system capability and to add boundary conditions to handle spanwise periodicity and transpiration boundaries. This user's manual describes how to use the ADPAC code as developed in Task 5, NAS3-25270, including the modifications made to date in Tasks 7 and 8, NAS3-25270. Hall, Edward J. and Topp, David A. and Heidegger, Nathan J. and Delaney, Robert A. Unspecified Center NASA-CR-195360, E-9025, NAS 1.26:195360 NAS3-25270; RTOP 538-03-11...
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781724265432
Category :
Languages : en
Pages : 202
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The focus of this task was to validate the ADPAC code for heat transfer calculations. To accomplish this goal, the ADPAC code was modified to allow for a Cartesian coordinate system capability and to add boundary conditions to handle spanwise periodicity and transpiration boundaries. The primary validation case was the film cooled C3X vane. The cooling hole modeling included both a porous region and grid in each discrete hold. Predictions for these models as well as smooth wall compared well with the experimental data. Hall, Edward J. and Topp, David A. and Heidegger, Nathan J. and Delaney, Robert A. Unspecified Center NASA-CR-195359, E-9024, NAS 1.26:195359 NAS3-25270; RTOP 538-03-11...
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 206
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 88
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 80
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